AP Physics 1mediummcq1 pt
A 0.60 kg ball swings in a circle of radius 0.50 m with period 0.40 s (π ≈ 3.14). Its angular momentum about the center is about
A.2.4 kg·m²/s
B.1.2 kg·m²/s
C.4.7 kg·m²/s
D.0.30 kg·m²/s
Explanation
Core Concept
v = 2πr/T = 2π(0.50)/0.40 = 7.85 m/s; L = mvr = (0.60)(7.85)(0.50) ≈ 2.4 kg·m²/s.
Correct Answer
A2.4 kg·m²/s
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